Option a is the correct answer. Dashpur inscription is known as the first advertisement of the world. This advertisement was written in Sanskrit in Mandsaur Madhya Pradesh India. This advertisement was written by some businessman on the wall of surya mandir in khilchipura in mandsaur. This advertisement is written for promoting silk saris sales. It was the first advertisement of the world and this was proved by specialist and scientist by seeing an inscription on the wall. Important Tips The Supia inscription is an ancient inscription found in the village of Supia, located in the Indian state of Madhya Pradesh. This inscription dates back to the reign of the Gupta king skandagupta. The Eran inscription is in state of Madhya Pradesh. It is associated with the Gupta dynasty and provides historical and epigraphic evidence of Gupta rule. The Sohgaura copper plate inscription is an Indian copper plate inscription written in Prakrit in the Brahmi script. It was discovered in Sohgaura, a village on the banks of the Rapti River, Gorakhpur District, Uttar Pradesh, India. It gives information about grain distribution due to famine in Mauryan period.